YCC (color model)

The YCC color model is one of the company Kodak in connection with the photo CD developed and as a trademark protected color system . The correct name is Kodak PhotoYCC ™ . It's a form of the YCbCr color model .

YCC breaks down the 24  bits of a gamma-corrected R'G'B ' color pixel, 8 bits each for red, green and blue, into 8 bits for coding the brightness ( luminance ) Y in 2 ⁸ = 256 levels and 2 × 8 bits for coding the color components ( chrominance ) CC. The scaling factors should be optimized for the color scale usual for photo paper . The conversion in matrix notation :

${\displaystyle {\begin{bmatrix}Y'\\C\\C\end{bmatrix}}\approx {\begin{bmatrix}0\\156\\137\end{bmatrix}}+{\begin{bmatrix}54{,}383&106{,}76&20{,}735\\-37{,}595&-73{,}806&111{,}4\\135{,}64&-113{,}58&-22{,}058\end{bmatrix}}{\begin{bmatrix}R'\\G'\\B'\end{bmatrix}}}$

See also

• Color space (further color spaces, color space systems, color models)

Web links

• Charles Poynton - Color FAQ